Well lynchknot, its very common to see these types of attacks, I think outpost has that DOS attack blocked. Denial of service attacks are not only targeted at popular internet site servers, these type of attacks can attack any computer it finds, since you have a firewall you should be safe.

[font=arial, helvetica] DoS attack [/font]

Short for denial-of-service attack, a type of attack on a network that is designed to bring the network to its knees by flooding it with useless traffic. Many DoS attacks, such as the Ping of Death and Teardrop attacks, exploit limitations in the TCP/IP protocols. For all known DoS attacks, there are software fixes that system administrators can install to limit the damage caused by the attacks. But, like viruses, new DoS attacks are constantly being dreamed up by hackers.